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A disc with radius, R, rotates (at an angular speed of ?) near a surface that is fixed. The space between the disc and surface is filled with a fluid that has viscosity, µ. The distance between the disc and surface is h. Find the dependence between the torque, T, on the disc and the other variables in terms of dimensionless PI groups?
A cold air-standard Brayton refrigeration cycle has a pressure ratio of 4 and a refrigeration rate of 15 kW. Air enters the compressor at -7oC. The high pressure air is cooled to 27 oC by rejecting heat to the surroundings. It is further cooled to -1..
a cylinder made of astm a242 steel is 50cm in diameter and 250mm long and has a wall thickness of 24mm. a round bar of
a gate is 0.5 m wide and 0.6 m tall and is hinged at the bottom. on one side the gate holds back a 0.5 m deep body of
air enters a cooling coil at the rate of 5000 cfm 2.4 m3s at 80 f 27 c db 68 f 20 c wb and sea-level pressure. the air
a 2250 l tank contains 5.682 kg of steam at 5 bar. determine the temperature and z compressibility of steam using a.
determine the critical load of a pinned pinned column by the following methodsa. solving the second order differential
a 2011 penny is thrown into a pool of water for luck. what is the force acting on the penny if it lands horizontally on
Which exerts more pressure: 25 feet of Acetaldehyde with a specific gravity of 1.59 or 25 feet of water? How did you know? Calculate the pressure.
1. steam is supplied dry saturated at 40 bar to a turbine and the condenser pressure is 0.035 bar. if the plant
an fcc iron-carbon alloy initially containing 0.20 wt c is carburized at an elevated temperature and in an atmosphere
A heat pump uses refrigerant-134a as the working fluid in an ideal vapour-compression refrigeration cycle between 0.14 and 0.8 MPa. The refrigerant leaves the compressor at a temperature of 40° C. Determine the pressure, temperature and enthalpy a..
write the equation of motion for a pendulum consisting of a thin 4kg stick of length l suspended from a pivot. how long
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